The Gerald Danovitch Saxophone Quartet (GDSQ) was a Canadian music ensemble formed in 1968.
The original group members were Danovitch on soprano saxophone, Donald Hughes on alto, Shane Nestruck on baritone, and Abe Kestenberg on tenor.
In 1988 the quartet performed at the ninth World Saxophone Congress, in Tokyo, Japan, and toured the Far East.
CBC JazzImage also made a recording of the composition that same year, featuring the New York Saxophone Quartet.
After the sudden death of Gerald Danovitch from cancer in 1997, Newman and Kestenberg formed the Phoenix Saxophone Quartet.